CN209118911U - A kind of current transformer multiturn wound form Primary Conductor mounting structure - Google Patents

Abstract

The utility model relates to current transformer fields, specifically a kind of current transformer multiturn wound form Primary Conductor mounting structure, including upper oil conservater, body, Primary Conductor, cleat assembly, the end P1 busbar and the end P2 busbar, body is set in upper oil conservater, Primary Conductor is paperwrapped on body, the end P1 busbar and the end P2 busbar are divided into the upper oil conservater two sides, and it is connected after Primary Conductor one end extraction by cleat assembly and the end P1 busbar, the other end is connected after drawing by cleat assembly and the end P2 busbar, the cleat assembly includes upper clamp plate, lower clamp plate and hold-down bolt, Primary Conductor end between upper clamp plate and lower clamp plate by passing through, and the upper clamp plate and lower clamp plate are connected by hold-down bolt.The utility model is paperwrapped in Primary Conductor on the external insulation of body according to corresponding the number of turns, solves low current than mutual inductor to high accuracy requirement, and installing and dismounting is all very convenient.

Description

A kind of current transformer multiturn wound form Primary Conductor mounting structure

Technical field

The utility model relates to current transformer field, specifically a kind of current transformer multiturn wound form is once led Mounting structure.

Background technique

Oil-immersed inverted current transformer is a kind of is used in AC electric power systems for electric current, electric energy measurement and relay protection Equipment, oil-immersed inverted current transformer have obtained the generally approval of user with its excellent performance, but in specified electricity When flowing smaller, it since inverted Primary Conductor is tubular structure, cannot achieve more the number of turns, be on the one hand not easy to meet in this way To the requirement of mutual inductor high accuracy, the iron core and secondary coil volume of another aspect mutual inductor also be will increase, in the fabrication process It will increase many costs.

Utility model content

The purpose of this utility model is to provide a kind of current transformer multiturn wound form Primary Conductor mounting structures, make one Partial conductor is paperwrapped on the external insulation of body according to corresponding the number of turns, solves low current than mutual inductor to high accuracy requirement, and Primary Conductor both ends are connected by cleat assembly and the busbar of upper oil conservater two sides respectively after drawing, and installing and dismounting is all very square Just.

The purpose of this utility model is achieved through the following technical solutions:

A kind of current transformer multiturn wound form Primary Conductor mounting structure, including upper oil conservater, body, Primary Conductor, Cleat assembly, the end P1 busbar and the end P2 busbar, body are set in upper oil conservater, and Primary Conductor is paperwrapped on body, the end P1 Busbar and the end P2 busbar are divided into the upper oil conservater two sides, and pass through cleat assembly after the extraction of described Primary Conductor one end It is connected with the end P1 busbar, the other end is connected after drawing by cleat assembly and the end P2 busbar, the clamping plate group Part includes upper clamp plate, lower clamp plate and hold-down bolt, and Primary Conductor end between upper clamp plate and lower clamp plate by passing through, and the upper folder Plate and lower clamp plate are connected by hold-down bolt.

The upper oil conservater side is equipped with P1 end flanges, and the end P1 busbar is installed in the P1 end flanges, and described Insulating washer is equipped between the end P1 busbar and P1 end flanges, the end P1 busbar and insulating washer pass through the end P1 fixing bolt It is fixed in P1 end flanges, and is arranged with insulating sleeve on the fixing bolt of the end P1.

The end P1 sealing ring is equipped in the insulating washer two sides.

The upper oil conservater side is equipped with P2 end flanges, and the end P2 busbar is fixed on described by the end P2 fixing bolt In P2 end flanges, the end P2 sealing ring is equipped between the end P2 busbar and P2 end flanges.

The compression recess of arc is equipped on the upper clamp plate and lower clamp plate.

The advantages of the utility model and good effect are as follows:

1, the Primary Conductor of the utility model is paperwrapped on the external insulation of body according to corresponding the number of turns, and first winding at most may be used To wind 48 circle copper stranded conductors, number of ampere turns is increased, and reduce secondary core volume and cost, solve low current than mutual inductor pair High accuracy requirement.

2, it is conductive by cleat assembly and the end P1 busbar and the end P2 respectively after the utility model Primary Conductor both ends are drawn Row is connected, and installing and dismounting is all very convenient.

3, insulating washer is equipped between the end the P1 busbar and P1 end flanges of the utility model, while on the fixing bolt of the end P1 It is arranged with insulating sleeve, effectively the end P1 fixing bolt is isolated with the end P1 busbar for the insulating sleeve and insulating washer, is guaranteed Product operational safety.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model,

Fig. 2 is the schematic diagram of the upper clamp plate and the fixed Primary Conductor of lower clamp plate in Fig. 1,

Fig. 3 is the P1 end-view in Fig. 1,

Fig. 4 is enlarged drawing at the A in Fig. 1,

Fig. 5 is enlarged drawing at the B in Fig. 1.

Wherein, 1 is upper oil conservater, and 2 be body, and 3 be Primary Conductor, and 4 be P1 end flanges, and 5 be insulating washer, and 6 be insulation Casing, 7 be the end P1 busbar, and 8 be the end P1 sealing ring, and 9 be the end P1 fixing bolt, and 10 be the end P2 sealing ring, and 11 fix for the end P2 Bolt, 12 be hold-down bolt, and 13 is compress recess, and 14 be the end P2 busbar, and 15 be lower clamp plate, and 16 be upper clamp plate, and 17 be the end P2 Flange.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing.

As shown in Fig. 1~5, the utility model includes that upper oil conservater 1, body 2, Primary Conductor 3, cleat assembly, the end P1 are led The electricity row's end 7 and P2 busbar 14, body 2 are set in upper oil conservater 1, and Primary Conductor 3 is paperwrapped in the outer of body 2 according to corresponding the number of turns In insulation, the end P1 busbar 7 and the end P2 busbar 14 are divided into 1 two sides of upper oil conservater, and 3 one end of the Primary Conductor is logical It crosses cleat assembly and the end P1 busbar 7 is connected, the other end is connected by cleat assembly and the end P2 busbar, such as Fig. 2 Shown, the cleat assembly includes upper clamp plate 16, lower clamp plate 15 and hold-down bolt 12, wherein as shown in Figures 4 and 5, lower clamp plate 15 Be fixedly arranged on the end P1 busbar 7 or the end P2 busbar 14,3 end of Primary Conductor by being passed through between upper clamp plate 16 and lower clamp plate 15, The upper clamp plate 16 and lower clamp plate 15 are connected by hold-down bolt 12, are equipped with arc on the upper clamp plate 16 and lower clamp plate 15 Compression recess 13.In the present embodiment, the Primary Conductor 3 is made of annealed copper strand wire, and outsourcing crimped paper and polyester Film strips form external insulation, reserve 0~50mm length at 3 both ends of Primary Conductor and do not wrap insulation for conductive with corresponding end Row's connection.The upper oil conservater 1 and body 2 are techniques well known.

As shown in Fig. 1 and Fig. 3~4, upper 1 side of oil conservater is equipped with P1 end flanges 4, and the end P1 busbar 7 is installed on institute It states in P1 end flanges 4, and is equipped with insulating washer 5, the end P1 busbar 7 between the end P1 busbar 7 and P1 end flanges 4 It is fixed in P1 end flanges 4 with insulating washer 5 by the end P1 fixing bolt 9, and is arranged with absolutely on the end P1 fixing bolt 9 Effectively the end P1 fixing bolt 9 is isolated with the end P1 busbar 7 for edge casing 6, the insulating sleeve 6 and insulating washer 5, described exhausted 5 two sides of edge washer are equipped with the end P1 sealing ring 8, to prevent transformer oil from leaking.As shown in figure 3, six are equipped in the present embodiment altogether A end P1 fixing bolt 9, is arranged with insulating sleeve 6 on each end P1 fixing bolt 9, and each end P1 fixing bolt 9 along Circumferencial direction is uniformly distributed.

As shown in Figure 1 and Figure 5,1 other side of upper oil conservater is equipped with P2 end flanges 17, and the end P2 busbar 14 passes through The end P2 fixing bolt 11 is directly fixed in the P2 end flanges 17, is set between the end P2 busbar 14 and P2 end flanges 17 There is the end P2 sealing ring 10 to prevent transformer oil from leaking.

The working principle of the utility model are as follows:

The Primary Conductor 3 of the utility model is paperwrapped on the external insulation of body 2 according to corresponding the number of turns, and first winding at most may be used To wind 48 circle copper stranded conductors, number of ampere turns is increased, and reduce secondary core volume and cost, solve low current than mutual inductor pair High accuracy requirement, and pass through cleat assembly and the end P1 busbar 7 and the end P2 busbar 14 respectively after the extraction of 3 both ends of Primary Conductor It is connected, installing and dismounting is all very convenient, insulating washer 5 is in addition equipped between the end P1 busbar 7 and P1 end flanges 4, while the end P1 is solid Determine to be arranged with insulating sleeve 6 on bolt 9, the insulating sleeve 6 and insulating washer 5 effectively lead the end P1 fixing bolt 9 with the end P1 7 isolation of electricity row, guarantees product operational safety.

Claims (5)

1. a kind of current transformer multiturn wound form Primary Conductor mounting structure, it is characterised in that: including upper oil conservater (1), device Body (2), Primary Conductor (3), cleat assembly, the end P1 busbar (7) and the end P2 busbar (14), body (2) are set to upper oil conservater (1) in, Primary Conductor (3) is paperwrapped on body (2), and the end P1 busbar (7) and the end P2 busbar (14) are divided into the upper storage Oil Tank (1) two sides, and be connected after the extraction of the Primary Conductor (3) one end by cleat assembly and the end P1 busbar (7), separately One end is connected after drawing by cleat assembly and the end P2 busbar, and the cleat assembly includes upper clamp plate (16), lower clamp plate (15) and hold-down bolt (12), Primary Conductor (3) end between upper clamp plate (16) and lower clamp plate (15) by passing through, and the upper folder Plate (16) and lower clamp plate (15) are connected by hold-down bolt (12).

2. current transformer multiturn wound form Primary Conductor mounting structure according to claim 1, it is characterised in that: described Upper oil conservater (1) side is equipped with P1 end flanges (4), and the end P1 busbar (7) is installed on the P1 end flanges (4), and described Insulating washer (5), the end P1 busbar (7) and insulating washer (5) are equipped between the end P1 busbar (7) and P1 end flanges (4) It is fixed on P1 end flanges (4) by the end P1 fixing bolt (9), and is arranged with insulation sleeve on the end P1 fixing bolt (9) It manages (6).

3. current transformer multiturn wound form Primary Conductor mounting structure according to claim 2, it is characterised in that: in institute It states insulating washer (5) two sides and is equipped with the end P1 sealing ring (8).

4. current transformer multiturn wound form Primary Conductor mounting structure according to claim 1, it is characterised in that: described Upper oil conservater (1) side is equipped with P2 end flanges (17), and the end P2 busbar (14) is fixed on by the end P2 fixing bolt (11) On the P2 end flanges (17), the end P2 sealing ring (10) is equipped between the end P2 busbar (14) and P2 end flanges (17).

5. current transformer multiturn wound form Primary Conductor mounting structure according to claim 1, it is characterised in that: in institute State the compression recess (13) that arc is equipped on upper clamp plate (16) and lower clamp plate (15).